*{
    margin: 0;
    padding: 0;
    list-style: none;
}
#nav{
    min-height: 100vh;
}
#mainstay{
    margin-left: 2vw;
    max-height: 100vh;
}
.navbar-toggler{
    border: none;
}
nav .header{
    margin-bottom: 10px;
    margin-right: 5px;

}
img{
    width: 35px;
}
.line{
    height: 1px;
    width: 100%;
    background-color: #cccccc;
}
nav ul a{
    display: block;
    width: 100%;
    color: #737373;
}
.nav-title{
    padding-left: 5px;
}
.nav-content{
    background-color: #f2f2f2;
}
.nav-content>a{
    display: block;
}
iframe{
    width: 100%;
    height: 100%;
}